Phase Diagram and Magnetic Excitations of BaFe2-xNixAs2: A Neutron Scattering Study

Xingye Lu received his B. Sc. in Physics from Hebei University, China in 2008, and completed his Ph.D. in experimental condensed matter physics at the Institute of Physics, Chinese Academy of Sciences in July 2014. His work involves the use of neutron scattering to study the magnetic ordering and spin dynamics of iron-based superconductors, supervised by Prof. Pengcheng Dai. He visited Prof. Pengcheng Dai’s group in Rice University from November 2014 to January 2015, prior to becoming a postdoctoral fellow (PSI fellow) working with Dr. Thorsten Schmitt at the Paul Scherrer Institut, Switzerland, where he focuses on measuring elementary excitations of correlated electron materials by means of resonant inelastic X-ray scattering.

Introduction.- Iron based superconductors.- Neutron scattering.- Phase diagram and incommensurate antiferromagnetic order of BaFe2-xNixAs2.- Origin of the incommensurate magnetic order in BaFe2-xNixAs2.- Nematic spin correlations in detwinned BaFe2-xNixAs2.- Magnetic excitations in overdoped BaFe2-xNixAs2.- Summary and outlook.- References.- Publications.- Resume.- Acknowledgements.